2 * linux/arch/arm/mach-omap2/board-n8x0.c
4 * Copyright (C) 2005-2009 Nokia Corporation
5 * Author: Juha Yrjola <juha.yrjola@nokia.com>
7 * Modified from mach-omap2/board-generic.c
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
14 #include <linux/clk.h>
15 #include <linux/delay.h>
16 #include <linux/gpio.h>
17 #include <linux/init.h>
19 #include <linux/irq.h>
20 #include <linux/stddef.h>
21 #include <linux/i2c.h>
22 #include <linux/spi/spi.h>
23 #include <linux/usb/musb.h>
24 #include <linux/mmc/host.h>
25 #include <linux/platform_data/spi-omap2-mcspi.h>
26 #include <linux/platform_data/mmc-omap.h>
27 #include <linux/mfd/menelaus.h>
28 #include <sound/tlv320aic3x.h>
30 #include <asm/mach/arch.h>
31 #include <asm/mach-types.h>
36 #include "common-board-devices.h"
38 #define TUSB6010_ASYNC_CS 1
39 #define TUSB6010_SYNC_CS 4
40 #define TUSB6010_GPIO_INT 58
41 #define TUSB6010_GPIO_ENABLE 0
42 #define TUSB6010_DMACHAN 0x3f
44 #define NOKIA_N810_WIMAX (1 << 2)
45 #define NOKIA_N810 (1 << 1)
46 #define NOKIA_N800 (1 << 0)
48 static u32 board_caps;
50 #define board_is_n800() (board_caps & NOKIA_N800)
51 #define board_is_n810() (board_caps & NOKIA_N810)
52 #define board_is_n810_wimax() (board_caps & NOKIA_N810_WIMAX)
54 static void board_check_revision(void)
56 if (of_have_populated_dt()) {
57 if (of_machine_is_compatible("nokia,n800"))
58 board_caps = NOKIA_N800;
59 else if (of_machine_is_compatible("nokia,n810"))
60 board_caps = NOKIA_N810;
61 else if (of_machine_is_compatible("nokia,n810-wimax"))
62 board_caps = NOKIA_N810_WIMAX;
66 pr_err("Unknown board\n");
69 #if defined(CONFIG_USB_MUSB_TUSB6010) || defined(CONFIG_USB_MUSB_TUSB6010_MODULE)
71 * Enable or disable power to TUSB6010. When enabling, turn on 3.3 V and
72 * 1.5 V voltage regulators of PM companion chip. Companion chip will then
73 * provide then PGOOD signal to TUSB6010 which will release it from reset.
75 static int tusb_set_power(int state)
80 gpio_set_value(TUSB6010_GPIO_ENABLE, 1);
83 /* Wait until TUSB6010 pulls INT pin down */
85 while (i && gpio_get_value(TUSB6010_GPIO_INT)) {
91 printk(KERN_ERR "tusb: powerup failed\n");
95 gpio_set_value(TUSB6010_GPIO_ENABLE, 0);
102 static struct musb_hdrc_config musb_config = {
109 static struct musb_hdrc_platform_data tusb_data = {
111 .set_power = tusb_set_power,
112 .min_power = 25, /* x2 = 50 mA drawn from VBUS as peripheral */
113 .power = 100, /* Max 100 mA VBUS for host mode */
114 .config = &musb_config,
117 static void __init n8x0_usb_init(void)
120 static char announce[] __initdata = KERN_INFO "TUSB 6010\n";
122 /* PM companion chip power control pin */
123 ret = gpio_request_one(TUSB6010_GPIO_ENABLE, GPIOF_OUT_INIT_LOW,
126 printk(KERN_ERR "Could not get TUSB power GPIO%i\n",
127 TUSB6010_GPIO_ENABLE);
132 ret = tusb6010_setup_interface(&tusb_data, TUSB6010_REFCLK_19, 2,
133 TUSB6010_ASYNC_CS, TUSB6010_SYNC_CS,
134 TUSB6010_GPIO_INT, TUSB6010_DMACHAN);
143 gpio_free(TUSB6010_GPIO_ENABLE);
147 static void __init n8x0_usb_init(void) {}
149 #endif /*CONFIG_USB_MUSB_TUSB6010 */
152 static struct omap2_mcspi_device_config p54spi_mcspi_config = {
156 static struct spi_board_info n800_spi_board_info[] __initdata = {
158 .modalias = "p54spi",
161 .max_speed_hz = 48000000,
162 .controller_data = &p54spi_mcspi_config,
166 #if defined(CONFIG_MENELAUS) && \
167 (defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE))
170 * On both N800 and N810, only the first of the two MMC controllers is in use.
171 * The two MMC slots are multiplexed via Menelaus companion chip over I2C.
172 * On N800, both slots are powered via Menelaus. On N810, only one of the
173 * slots is powered via Menelaus. The N810 EMMC is powered via GPIO.
175 * VMMC slot 1 on both N800 and N810
176 * VDCDC3_APE and VMCS2_APE slot 2 on N800
177 * GPIO23 and GPIO9 slot 2 EMMC on N810
180 #define N8X0_SLOT_SWITCH_GPIO 96
181 #define N810_EMMC_VSD_GPIO 23
182 #define N810_EMMC_VIO_GPIO 9
184 static int slot1_cover_open;
185 static int slot2_cover_open;
186 static struct device *mmc_device;
188 static int n8x0_mmc_switch_slot(struct device *dev, int slot)
190 #ifdef CONFIG_MMC_DEBUG
191 dev_dbg(dev, "Choose slot %d\n", slot + 1);
193 gpio_set_value(N8X0_SLOT_SWITCH_GPIO, slot);
197 static int n8x0_mmc_set_power_menelaus(struct device *dev, int slot,
198 int power_on, int vdd)
202 #ifdef CONFIG_MMC_DEBUG
203 dev_dbg(dev, "Set slot %d power: %s (vdd %d)\n", slot + 1,
204 power_on ? "on" : "off", vdd);
208 return menelaus_set_vmmc(0);
221 case MMC_VDD_165_195:
227 return menelaus_set_vmmc(mV);
230 return menelaus_set_vdcdc(3, 0);
255 case MMC_VDD_165_195:
261 return menelaus_set_vdcdc(3, mV);
266 static void n810_set_power_emmc(struct device *dev,
269 dev_dbg(dev, "Set EMMC power %s\n", power_on ? "on" : "off");
272 gpio_set_value(N810_EMMC_VSD_GPIO, 1);
274 gpio_set_value(N810_EMMC_VIO_GPIO, 1);
277 gpio_set_value(N810_EMMC_VIO_GPIO, 0);
279 gpio_set_value(N810_EMMC_VSD_GPIO, 0);
284 static int n8x0_mmc_set_power(struct device *dev, int slot, int power_on,
287 if (board_is_n800() || slot == 0)
288 return n8x0_mmc_set_power_menelaus(dev, slot, power_on, vdd);
290 n810_set_power_emmc(dev, power_on);
295 static int n8x0_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode)
299 dev_dbg(dev, "Set slot %d bus mode %s\n", slot + 1,
300 bus_mode == MMC_BUSMODE_OPENDRAIN ? "open-drain" : "push-pull");
301 BUG_ON(slot != 0 && slot != 1);
304 case MMC_BUSMODE_OPENDRAIN:
305 r = menelaus_set_mmc_opendrain(slot, 1);
307 case MMC_BUSMODE_PUSHPULL:
308 r = menelaus_set_mmc_opendrain(slot, 0);
313 if (r != 0 && printk_ratelimit())
314 dev_err(dev, "MMC: unable to set bus mode for slot %d\n",
319 static int n8x0_mmc_get_cover_state(struct device *dev, int slot)
322 BUG_ON(slot != 1 && slot != 2);
324 return slot1_cover_open;
326 return slot2_cover_open;
329 static void n8x0_mmc_callback(void *data, u8 card_mask)
331 int bit, *openp, index;
333 if (board_is_n800()) {
335 openp = &slot2_cover_open;
339 openp = &slot1_cover_open;
348 #ifdef CONFIG_MMC_OMAP
349 omap_mmc_notify_cover_event(mmc_device, index, *openp);
351 pr_warn("MMC: notify cover event not available\n");
355 static int n8x0_mmc_late_init(struct device *dev)
362 r = menelaus_set_slot_sel(1);
371 r = menelaus_set_mmc_slot(2, 0, vs2sel, 1);
375 n8x0_mmc_set_power(dev, 0, MMC_POWER_ON, 16); /* MMC_VDD_28_29 */
376 n8x0_mmc_set_power(dev, 1, MMC_POWER_ON, 16);
378 r = menelaus_set_mmc_slot(1, 1, 0, 1);
381 r = menelaus_set_mmc_slot(2, 1, vs2sel, 1);
385 r = menelaus_get_slot_pin_states();
389 if (board_is_n800()) {
391 openp = &slot2_cover_open;
394 openp = &slot1_cover_open;
395 slot2_cover_open = 0;
398 /* All slot pin bits seem to be inversed until first switch change */
399 if (r == 0xf || r == (0xf & ~bit))
407 r = menelaus_register_mmc_callback(n8x0_mmc_callback, NULL);
412 static void n8x0_mmc_shutdown(struct device *dev)
421 menelaus_set_mmc_slot(1, 0, 0, 0);
422 menelaus_set_mmc_slot(2, 0, vs2sel, 0);
425 static void n8x0_mmc_cleanup(struct device *dev)
427 menelaus_unregister_mmc_callback();
429 gpio_free(N8X0_SLOT_SWITCH_GPIO);
431 if (board_is_n810()) {
432 gpio_free(N810_EMMC_VSD_GPIO);
433 gpio_free(N810_EMMC_VIO_GPIO);
438 * MMC controller1 has two slots that are multiplexed via I2C.
439 * MMC controller2 is not in use.
441 static struct omap_mmc_platform_data mmc1_data = {
443 .switch_slot = n8x0_mmc_switch_slot,
444 .init = n8x0_mmc_late_init,
445 .cleanup = n8x0_mmc_cleanup,
446 .shutdown = n8x0_mmc_shutdown,
447 .max_freq = 24000000,
450 .set_power = n8x0_mmc_set_power,
451 .set_bus_mode = n8x0_mmc_set_bus_mode,
452 .get_cover_state = n8x0_mmc_get_cover_state,
453 .ocr_mask = MMC_VDD_165_195 | MMC_VDD_30_31 |
454 MMC_VDD_32_33 | MMC_VDD_33_34,
458 .set_power = n8x0_mmc_set_power,
459 .set_bus_mode = n8x0_mmc_set_bus_mode,
460 .get_cover_state = n8x0_mmc_get_cover_state,
461 .ocr_mask = MMC_VDD_165_195 | MMC_VDD_20_21 |
462 MMC_VDD_21_22 | MMC_VDD_22_23 |
463 MMC_VDD_23_24 | MMC_VDD_24_25 |
464 MMC_VDD_27_28 | MMC_VDD_28_29 |
465 MMC_VDD_29_30 | MMC_VDD_30_31 |
466 MMC_VDD_32_33 | MMC_VDD_33_34,
471 static struct omap_mmc_platform_data *mmc_data[OMAP24XX_NR_MMC];
473 static struct gpio n810_emmc_gpios[] __initdata = {
474 { N810_EMMC_VSD_GPIO, GPIOF_OUT_INIT_LOW, "MMC slot 2 Vddf" },
475 { N810_EMMC_VIO_GPIO, GPIOF_OUT_INIT_LOW, "MMC slot 2 Vdd" },
478 static void __init n8x0_mmc_init(void)
482 if (board_is_n810()) {
483 mmc1_data.slots[0].name = "external";
486 * Some Samsung Movinand chips do not like open-ended
487 * multi-block reads and fall to braind-dead state
488 * while doing so. Reducing the number of blocks in
489 * the transfer or delays in clock disable do not help
491 mmc1_data.slots[1].name = "internal";
492 mmc1_data.slots[1].ban_openended = 1;
495 err = gpio_request_one(N8X0_SLOT_SWITCH_GPIO, GPIOF_OUT_INIT_LOW,
500 if (board_is_n810()) {
501 err = gpio_request_array(n810_emmc_gpios,
502 ARRAY_SIZE(n810_emmc_gpios));
504 gpio_free(N8X0_SLOT_SWITCH_GPIO);
509 mmc1_data.nr_slots = 2;
510 mmc_data[0] = &mmc1_data;
513 static struct omap_mmc_platform_data mmc1_data;
514 void __init n8x0_mmc_init(void)
517 #endif /* CONFIG_MMC_OMAP */
519 #ifdef CONFIG_MENELAUS
521 static int n8x0_auto_sleep_regulators(void)
526 val = EN_VPLL_SLEEP | EN_VMMC_SLEEP \
527 | EN_VAUX_SLEEP | EN_VIO_SLEEP \
528 | EN_VMEM_SLEEP | EN_DC3_SLEEP \
529 | EN_VC_SLEEP | EN_DC2_SLEEP;
531 ret = menelaus_set_regulator_sleep(1, val);
533 pr_err("Could not set regulators to sleep on menelaus: %u\n",
540 static int n8x0_auto_voltage_scale(void)
544 ret = menelaus_set_vcore_hw(1400, 1050);
546 pr_err("Could not set VCORE voltage on menelaus: %u\n", ret);
552 static int n8x0_menelaus_late_init(struct device *dev)
556 ret = n8x0_auto_voltage_scale();
559 ret = n8x0_auto_sleep_regulators();
566 static int n8x0_menelaus_late_init(struct device *dev)
572 struct menelaus_platform_data n8x0_menelaus_platform_data __initdata = {
573 .late_init = n8x0_menelaus_late_init,
576 struct aic3x_pdata n810_aic33_data __initdata = {
580 static int __init n8x0_late_initcall(void)
590 omap_late_initcall(n8x0_late_initcall);
593 * Legacy init pdata init for n8x0. Note that we want to follow the
594 * I2C bus numbering starting at 0 for device tree like other omaps.
596 void * __init n8x0_legacy_init(void)
598 board_check_revision();
599 spi_register_board_info(n800_spi_board_info,
600 ARRAY_SIZE(n800_spi_board_info));